<h2>My Heroes</h2>
  <ul class="heroes">
    <li *ngFor="let hero of heroes" [class.selected]="hero === selectedHero" (click)="onSelect(hero)" >
      <span class="badge">{{hero.id}}</span> {{hero.name}}
    </li>
  </ul>
  <div *ngIf="selectedHero">
    <h2>
      {{ selectedHero.name | uppercase }} is my hero
    </h2>
    <button (click)="gotoDetail()" >View Details</button>
  </div>